Firstly, I'm pretty new to the world of arduino and programming but I'm working hard to learn. I've already built one EtherTen/Relay8 combo to replace the switches on our pool fountains/spa/lights and works like a charm over a modified web page.
I'm now trying to run an EtherTen with 2 relay8 shields. I've got it running sweet with a simple web server for relay activation by web page. Now I want to integrate momentary push buttons into the mix (think light switch replacement as well as control via web interface).
I've used the following code from one of the other forum topics and it works to a degree. The push button switches the relay on however it does not turn it off. Sending a zero via serial turns it off fine.
Code: Select all
#include "Wire.h"
#define I2C_ADDR 0x20 // 0x20 is the address with all jumpers removed
const int buttonPin2 = 2; // the number of the pushbutton pin
int buttonState = 0; // variable for reading the pushbutton status
void setup()
{
pinMode(ledPin, OUTPUT);
pinMode(buttonPin, INPUT);
Serial.begin( 38400 );
Serial.println("RELAY8 demonstration starting up");
Wire.begin(); // Wake up I2C bus
// Set I/O bank A to outputs
Wire.beginTransmission(I2C_ADDR);
Wire.write(0x00); // IODIRA register
Wire.write(0x00); // Set all of bank A to outputs
Wire.endTransmission();
Serial.println("Ready. Type 0 to turn off relays, 1 - 8 to activate a relay.");
}
void loop()
{
int command = 0;
if (digitalRead(buttonPin)==HIGH)
{
sendValueToLatch(1);
digitalWrite(ledPin, HIGH);
Serial.println("Activating relay 1");
delay(5000);
}
if (Serial.available())
{
command = Serial.read();
if( command == '0' )
{
sendValueToLatch(0);
digitalWrite(ledPin, LOW);
Serial.println("Resetting all relays");
}
if( command == '2' )
{
sendValueToLatch(2);
Serial.println("Activating relay 2");
}
}
}
void sendValueToLatch(int latchValue)
{
Wire.beginTransmission(I2C_ADDR);
Wire.write(0x12); // Select GPIOA
Wire.write(latchValue); // Send value to bank A
Wire.endTransmission();
}
Code: Select all
/**
* OutputControllerRelay8x2.pde
*/
#include <SPI.h>
#include "Ethernet.h"
#include "WebServer.h"
#include "Wire.h"
#define SHIELD_1_I2C_ADDRESS 0x20 // 0x20 is the address with all jumpers removed
#define SHIELD_2_I2C_ADDRESS 0x21 // 0x21 is the address with a jumper on position A0
#define MAC_I2C_ADDRESS 0x50 // Microchip 24AA125E48 I2C ROM address
/* If channelInterlocks is set to true, the channels are grouped into
* pairs starting at 1 (ie: channels 1 & 2, 3 & 4, etc) and only one
* channel in each pair can be on at any time. For example, if channel
* 1 is on and 2 is set to on, channel 1 will be turned off first and
* vice versa. This is to allow control of dual-active devices such as
* electric curtain motors which must only be driven in one direction
* at a time. */
const byte channelInterlocks = false;
/* CHANGE THIS TO YOUR OWN UNIQUE VALUE. The MAC number should be
* different from any other devices on your network or you'll have
* problems receiving packets. Can be replaced automatically below
* using a MAC address ROM. */
static uint8_t mac[] = { 0xFE, 0xDE, 0x8A, 0xAA, 0xFF, 0xB4 };
/* CHANGE THIS TO MATCH YOUR HOST NETWORK. Most home networks are in
* the 192.168.0.XXX or 192.168.1.XXX subrange. Pick an address
* that's not in use and isn't going to be automatically allocated by
* DHCP from your router. Can be replaced automatically using DHCP. */
static uint8_t ip[] = { 192, 168, 2, 111 };
#define PREFIX "/control" // This will be appended to the IP address as the URL
WebServer webserver(PREFIX, 80);
byte shield1BankA = 0; // Current status of all outputs on first shield, one bit per output
byte shield2BankA = 0; // Current status of all outputs on second shield, one bit per output
/* This command is set as the default command for the server. It
* handles both GET and POST requests. For a GET, it returns a simple
* page with some buttons. For a POST, it saves the value posted to
* the buzzDelay variable, affecting the output of the speaker */
void serverCmd(WebServer &server, WebServer::ConnectionType type, char *url_tail, bool tail_complete)
{
/* If we've received a POST request we need to process the submitted form values */
if (type == WebServer::POST)
{
bool repeat;
char name[20], value[16];
do
{
/* readPOSTparam returns false when there are no more parameters
* to read from the input. We pass in buffers for it to store
* the name and value strings along with the length of those
* buffers. */
repeat = server.readPOSTparam( name, 20, value, 16);
/* This is a standard string comparison function. It returns 0
* when there's an exact match. */
if (strcmp( name, "On" ) == 0)
{
setLatchChannelOn( atoi(value) );
}
if (strcmp( name, "Off" ) == 0)
{
setLatchChannelOff( atoi(value) );
}
if (strcmp( name, "AllOff" ) == 0)
{
sendRawValueToLatch1(0);
sendRawValueToLatch2(0);
}
} while (repeat);
// After procesing the POST data, tell the web browser to reload
// the page using a GET method.
server.httpSeeOther(PREFIX);
return;
}
/* for a GET or HEAD, send the standard "it's all OK" headers */
server.httpSuccess();
/* Don't output the body for a HEAD request, only for GET */
if (type == WebServer::GET)
{
/* store the HTML in program memory using the P macro */
P(message) =
"<html><head><title>16 Channel Test</title>"
"<body style='background-color:powderblue;'>"
"<form action='/control' method='POST'>"
"<h1 style='color:red;font-family:comic sans ms;font-size:200%;text-align:center;'>16 Channel Test</h1><hr>"
"<div style='float:left;width:60%;'>"
"<p style='font-size:140%;'><button style='height:40px;width:75px' type='submit' name='On' value='1'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='1'>Off</button>1<button style='height:40px;width:75px' type='submit' name='On' value='2'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='2'>Off</button>2</p>"
"<p style='font-size:140%;'><button style='height:40px;width:75px' type='submit' name='On' value='3'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='3'>Off</button>3<button style='height:40px;width:75px' type='submit' name='On' value='4'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='4'>Off</button>4</p>"
"<p style='font-size:140%;'><button style='height:40px;width:75px' type='submit' name='On' value='5'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='5'>Off</button>5<button style='height:40px;width:75px' type='submit' name='On' value='6'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='6'>Off</button>6</p>"
"<p style='font-size:140%;'><button style='height:40px;width:75px' type='submit' name='On' value='7'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='7'>Off</button>7<button style='height:40px;width:75px' type='submit' name='On' value='8'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='8'>Off</button>8</p>"
"<p style='font-size:140%;'><button style='height:40px;width:75px' type='submit' name='On' value='9'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='9'>Off</button>9<button style='height:40px;width:75px' type='submit' name='On' value='10'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='10'>Off</button>10</p>"
"<p style='font-size:140%;'><button style='height:40px;width:75px' type='submit' name='On' value='11'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='11'>Off</button>11<button style='height:40px;width:75px' type='submit' name='On' value='12'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='12'>Off</button>12</p>"
"<p style='font-size:140%;'><button style='height:40px;width:75px' type='submit' name='On' value='13'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='13'>Off</button>13<button style='height:40px;width:75px' type='submit' name='On' value='14'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='14'>Off</button>14</p>"
"<p style='font-size:140%;'><button style='height:40px;width:75px' type='submit' name='On' value='15'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='15'>Off</button>15<button style='height:40px;width:75px' type='submit' name='On' value='16'>On</button><button style='height:40px;width:75px' type='submit' name='Off' value='16'>Off</button>16</p>"
"<p style='font-size:140%;text-align:center;'><button style='height:40px;width:75px' type='submit' name='AllOff' value='0'>Off</button>  Turn Everything Off</p></div>"
"</form>"
"</body></html>";
server.printP(message);
}
}
/**
*/
void setup()
{
Wire.begin(); // Wake up I2C bus
Serial.begin( 38400 );
Serial.println("Test Control Output Controller starting up. v1.0, 16 channel relay shield");
Serial.print("Getting MAC address from ROM: ");
mac[0] = readRegister(0xFA);
mac[1] = readRegister(0xFB);
mac[2] = readRegister(0xFC);
mac[3] = readRegister(0xFD);
mac[4] = readRegister(0xFE);
mac[5] = readRegister(0xFF);
char tmpBuf[17];
sprintf(tmpBuf, "%02X:%02X:%02X:%02X:%02X:%02X", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
Serial.println(tmpBuf);
// setup the Ethernet library to talk to the Wiznet board
Ethernet.begin(mac, ip); // Use static address defined above
//Ethernet.begin(mac); // Use DHCP
// Print IP address:
Serial.print("My URL: http://");
for (byte thisByte = 0; thisByte < 4; thisByte++) {
// print the value of each byte of the IP address:
Serial.print(Ethernet.localIP()[thisByte], DEC);
if( thisByte < 3 )
{
Serial.print(".");
}
}
Serial.println("/control");
/* Register the default command (activated with the request of
* http://x.x.x.x/control */
webserver.setDefaultCommand(&serverCmd);
/* start the server to wait for connections */
webserver.begin();
/* Set up the Relay8 shields */
initialiseShield(SHIELD_1_I2C_ADDRESS);
sendRawValueToLatch1(0); // If we don't do this, channel 6 turns on! I don't know why
initialiseShield(SHIELD_2_I2C_ADDRESS);
sendRawValueToLatch2(0); // If we don't do this, channel 6 turns on! I don't know why
Serial.println("Ready.");
}
/**
*/
void loop()
{
// Process incoming connections one at a time forever
webserver.processConnection();
}
/**
*/
void initialiseShield(int shieldAddress)
{
// Set addressing style
Wire.beginTransmission(shieldAddress);
Wire.write(0x12);
Wire.write(0x20); // use table 1.4 addressing
Wire.endTransmission();
// Set I/O bank A to outputs
Wire.beginTransmission(shieldAddress);
Wire.write(0x00); // IODIRA register
Wire.write(0x00); // Set all of bank A to outputs
Wire.endTransmission();
}
/**
*/
void toggleLatchChannel(byte channelId)
{
if( channelId >= 1 && channelId <= 8 )
{
byte shieldOutput = channelId;
byte channelMask = 1 << (shieldOutput - 1);
shield1BankA = shield1BankA ^ channelMask;
sendRawValueToLatch1(shield1BankA);
}
else if( channelId >= 9 && channelId <= 16 )
{
byte shieldOutput = channelId - 8;
byte channelMask = 1 << (shieldOutput - 1);
shield2BankA = shield2BankA ^ channelMask;
sendRawValueToLatch2(shield2BankA);
}
}
/**
*/
void setLatchChannelOn (byte channelId)
{
/* if( channelInterlocks == true )
{
if ( (channelId % 2) == 0) // This is an even number channel, so turn off the channel before it
{
setLatchChannelOff( channelId - 1 );
} else { // This is an odd number channel, so turn off the channel after it
setLatchChannelOff( channelId + 1 );
}
} */
if( channelId >= 1 && channelId <= 8 )
{
byte shieldOutput = channelId;
byte channelMask = 1 << (shieldOutput - 1);
shield1BankA = shield1BankA | channelMask;
sendRawValueToLatch1(shield1BankA);
}
else if( channelId >= 9 && channelId <= 16 )
{
byte shieldOutput = channelId - 8;
byte channelMask = 1 << (shieldOutput - 1);
shield2BankA = shield2BankA | channelMask;
sendRawValueToLatch2(shield2BankA);
}
}
/**
*/
void setLatchChannelOff (byte channelId)
{
if( channelId >= 1 && channelId <= 8 )
{
byte shieldOutput = channelId;
byte channelMask = 255 - ( 1 << (shieldOutput - 1));
shield1BankA = shield1BankA & channelMask;
sendRawValueToLatch1(shield1BankA);
}
else if( channelId >= 9 && channelId <= 16 )
{
byte shieldOutput = channelId - 8;
byte channelMask = 255 - ( 1 << (shieldOutput - 1));
shield2BankA = shield2BankA & channelMask;
sendRawValueToLatch2(shield2BankA);
}
}
/**
*/
void sendRawValueToLatch1(byte rawValue)
{
Wire.beginTransmission(SHIELD_1_I2C_ADDRESS);
Wire.write(0x12); // Select GPIOA
Wire.write(rawValue); // Send value to bank A
shield1BankA = rawValue;
Wire.endTransmission();
}
/**
*/
void sendRawValueToLatch2(byte rawValue)
{
Wire.beginTransmission(SHIELD_2_I2C_ADDRESS);
Wire.write(0x12); // Select GPIOA
Wire.write(rawValue); // Send value to bank A
shield2BankA = rawValue;
Wire.endTransmission();
}
/**
* Required to read the MAC address ROM
*/
byte readRegister(byte r)
{
unsigned char v;
Wire.beginTransmission(MAC_I2C_ADDRESS);
Wire.write(r); // Register to read
Wire.endTransmission();
Wire.requestFrom(MAC_I2C_ADDRESS, 1); // Read a byte
while(!Wire.available())
{
// Wait
}
v = Wire.read();
return v;
}
Keiran.